Q. Which one of the following has $\mathrm{\Delta}S{^\circ}$ greater than zero?
A) $CaO + CO_{2}(g) \rightleftharpoons CaCO_{3}(s)$
B) $NaCl(aq) \rightleftharpoons NaCl(s)$
C) $NaNO_{3}(s) \rightleftharpoons Na^{+}(aq) + NO_{3}^{-}(aq)$
D) $N_{2}(g) + 3H_{2}(g) \rightleftharpoons 2NH_{3}(g)$
Explanation
The correct answer is Option C: $NaNO_{3}(s) \rightleftharpoons Na^{+}(aq) + NO_{3}^{-}(aq)$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.